Motor bedplate



J. L. BROWN MOTOR BEDPLATE Jan. 6, 1931.

Filed Feb. 14, 1927' INVENTOR John LBrown A'TI'ORNEY Morefparticularly,myinventin 1!! in systems of operating elevatorsknowni as Patented Ja n.6, 1931 1on1: L.:; BR O WN,1OF"VERQNA, rnmvs LvAnrA,ASSiGNbR"TO'WESTINGHOUSE ELEC wage a mnnnrnornnmeoomrnny, AGORPOR-ATIONOF"PENNSYLVANIA' I moron BEDPLATIQ i [\r) p v I v ,Myinventionrelates to 7 motor bedplates and especially tobedplateswhicharereversible and which areapplioable in any one of a great yarietyofinstallations 1 y p relates to elevator-motor: bedplatesfwhich arerevers ible and have unsynnnetricallyv disposed openings therein for thepurpose of adapb ing the same to practically all conditionsof 4pinstallatiom,as will be hereinafter described;

."lhe object of invention is to provide a strong light-weight tbedplatefor elevator motorsf whichmayybe utilized with substans tially-anyoneof' the roping conditions met gearless traction. drives. uu ln'theaccompanying drawings, Y ig. 1 isa plan viewof a bedplate embodyeingmyinvention,

installation embodying my invention,

25 1 Fig. 4 is a imilar view showing another application of thebedpla'te shown Fig. 3, an f [Figg 5 is alsoa similar .view showing anothenarrangement which may be obtained by reversing the bedplater from.the position 'shown'in Fig. 4: to allowfor disposal of roping mechanismto the left thereof. -My. cast-metalbedplate 1 is hollow, havingchambers 2 formedybytransverseowebs 0r fiepartitions ,3, which.reinforce the side, top

and bottom Walls 4: thereof.

During the'casting of the bedplate, aplurality .of baked-sand cores,(not shown) havingprojecting and supporting portions, are provided toform the chambers 2.- The projecting;portionsof the cores form alining,

windows or openingsfi in the top and bottom walls ofthe bedplate,through which the cores maybe dug out when the castingoperation iscompleted.

It is apparent that the windows 5 are necessary in order that the coresmay be removed from the chambers, but in addition, the windowsmaterially facilitate handling and in- 9 stalling the bedplate,

fit, as shown. Fig. 4.

Fig. :2 isa sectional of the plate ihppli eation filed retruary 14,1m.ssmmif167,9os. p

{I,Pioj eding'fiomitheviipprlra of meted; plate, area pluralityof bossesor raised ma? 1 chin ds ces':611 1 w c a mo or 8 s V mounted, a sshownin Fig. 3.

A similar setof bosses is provided on the lower face of. the.bedplate,.so that-it may-be; invertedand thev motor 8 may bemounted onA1 substantially rectangular opening bounded on'four sides byoportionsofthe cast:

ing, isgdisposednear one end of the bedplate to {accommodate theeables'10' which. pass over the motor sheaverllr 'Acsecond sub. stantiallyrectangular "slot-like opening 112,

bounded on three sides by portions of the bedp'late, is I disposed; inalinement. V with the first opening and separated therefrom by'fla vbracing portionor web 13; a Q ;gearless;, traction driv emechanismforan, elevator is shown inFij 3. ;An elevator car o'rplatform14 is-suspeni ed at the ends of a or'cables 10.

pluralityof parallel ropes cables p sov'r'fthe sheave a 7 motor 15 themotorshaft. being indicated at '16, The cables extend from .the motorsheave to an idlerjlshea've 17fwhich is disposed laterally from, below,and axially parallel to, the motor sheave 11. From the idlersheave 17,the -cables extend to the motor sheave which they encircle a second;time and then return .tothe idler. sheave, thereby forming a closed loopwithin the'endsof which the two sheaves 16 and 17 are disposed. r

a The cablecends18-which depend vertically V In Fig. 1, the samebedplateis shown in inverted positionwhereby, as "will be evi operatingdent from, the drawing,'the idler sheave may be displaced a greaterlateral distance from the motor sheave. Thus, the cablesmustpass'through the bedplate at different angles and in differentplaces than those shown in In order that a roping system similar tothat'just described may be utilized, it is necessaryto 'provide openingsin the bedplate through which the cables maybe passed.

Since the relative positions or displacement -of the elevator car andthecounterweights 7 sizes of sheaves, so that the rope may'haveto" a ientapplications, and i t has notfbeen pospass thro ughrthe bedplate i atdifierent dis tances fromthe axial center line.asndxoneither sidethereofl I v A bed plate ofan intermediate sizejtsnchi as is shown inthe accompanyingdrawing,

weighs approximately 1500 pounds. It is imperative, therefore, thatisuchdevice shall be as" light in; weight as is consistent with the stren'gthand rigidityfnecessary to' the opveration ofthe elevator system 'ofwhichit is r It "has been necessary for manufacturers to have" available agreat variety of designs of bedplates to meet tlie' dema-nds ofdifiersible to build aibedplate'forany particular application untiltheexigencies' of the. ustomerfsjparticular requirements were" known 5ast'o the elevator speed; Ior" sheave diameter;

a side.

making the seaplane reversible, I 'have' fpr'o- V 5i) trated in Figs. a;4, and Meli sa-rasc ls, 5'5

the sizeofLthe elevatorfshaft; the distance.

bet-ween j the ropes, and the disposition of thev co nte weight on theri htor left hand Hereto fore, it necessary toprd was eitherseparate'bedpiates"for"rightand left-handed? throws, onbedplateswhicliare symmetrical, so" that they my beusee with either right orlefit' handed' throws; lint have very limited. ranges of applicabilityThis 7 has-been"ahandicapior'themanufacturembutit has been a star more"serious "iiandicaip for the: customer, who fwasflimitecl in th'e'flex-'ibility' with whicli lie could rearrange his installation according torequirements.

a By utilizing "openings'9 and IQQEwliich are disposed"non-symmetrically"; or at different distances from; the axial"centerline of the he'd-plate, lon'e o f the open-ings'being 'a' slotand the other being; an enclosed hole, and by vided" a: single th atwill accommodate all of the variations in "the angular throw-s of theropes andin the sheave sizlestihat are ordinarily met with in practice,asis i l-lusthe samei'angu'lar throws and sheave sizes maybeaccommodated, with equal facility. fbr; either left-hand throws or V rig-ht hand throws-as will 4 be obvious.

I'My' novel. construction saves money for the manuraetur'eir, also,because, although each be'lpl'ate is more "expensive than the:prior-artdevices, the saving in the number of different typesofbedplat'e to be carried, the "ability'fito manufacture and stock a thewhich orders maybe filled for the varying needs of customers, more thanoffset the tors 'and instal'lationm from the. standpointof'the'manufacturer as well as from that of the customer, ashas beenpointed out.

l c m i e iem 7 l 1;. A; hollow- .castme n havi ng top and bottom facesconnected By vertical 7 websiiandflanges providing hollow enclosedspaces, each of the hollow enclosed spaces measures about four feet bysix 'feet versely; of the bedplateandbeing provided with a verticallyextendingslot iirthes'idxdf the bedplat'e and in alinemen t wirhs i alonghole. a

a i" For use in elevator. system. compri's:

ing; acar; axcounterweight, a'm0tor5;a-inotor sheave, acou'nterv'vieigl'it sheave; and ropes operatively} connecting1tli'em}-";a{ reversifi1e bedplate forsup'porting' the" motor; an d'having; a vertically extending hole of elongated cross-section extending;transversely thereof 3 and a vertically extending slotin the salethereof in substantial alignment with: the elongated axis of said hole,said hedblate being adapted, in one position for'theipas sage of thecancarrying' rope-portion through the. hole, and for the-Fpassagzofarope-portion between the' two sheaves through the slot, and beingadaptefl in'the reverse position; forEthepassage of theicar- A carryingrope-p ort'ion through the slot", and for the passage ofa rope-portionBetiweentlie two sheaves throughithe' hole a 4 A reversible bedzplatesusceptible of use 'witli' either surface vuppermostaii'c'l' hav i'ng 'avertically extending hole of ohlong cross secti'on extendingtransversely thereof and auverticzrly. extending slot in the-sidethereof in alignmentwithsa-id oblong-hole.

4. For use in an elevator system c'omprising a C's-1 a scounterbalancing-means; a rope carrying the elevator carat ,oneendandthecountferbalancingmeans at the other end, two sheaves supporting therespective ends oftherope, anda motor drivingfthegslien've :for the carend of th'erope, a novel reversible 'be'clplate for supportingsaidsheaves and motor,. said bedplate' having a vertically extending holehaving an oblong cross sectron extending transversely thereofand asvertically extending" slot in theside therecf in alignment with saidoblong hole, said hole andfslot being adapted; in onepositionofftliexbedpla-te, for-the passage of'the car ca-rrying rope through thehol'e, and *forthe passage of the counterbalance carrying through theslotQahd in the reverse positiofi Q of the bedplate adapted for adifierent pas sagevof the several ropes.

In testimony whereof, "Ihav hei'uhto subscribed my name this 11th day ofFebru-t l" pry, 1927. t Q t JOHN BROWN."

